SOLUTION: how do I solve 2k + ar = r - 3y for r?

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Question 824504: how do I solve 2k + ar = r - 3y for r?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
2k+%2B+ar+=+r+-+3y
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More than one way, but possible:
Add -r to both, 2k%2Bar%2B%28-r%29=r-3y%2B%28-r%29
Add -2k to both, 2k%2Bar-r-2r=-3y%2B%28-2k%29
ar-r=-3y-2k
Factor r, r%28a-1%29=-3y%2B2k
Multiply both by 1/(a-1), highlight%28r=%28-3y%2B2k%29%2F%28a-1%29%29